phenomenon--the fogs which invariably shroud the Banks of Newfoundland, and which render the approach to the North-American coast in winter so particularly dangerous. The hot water of the Gulf-stream gives up its vapour to the cold air, and hangs about the coasts an impenetrable curtain, which baffles the navigator's skill, renders useless his chronometer, and but too often sends his bark to destruction upon the hidden shore. Another danger of the stormy Atlantic arises from the flow southward, in the spring and summer months, of icebergs. These stupendous masses have their breeding-place in Davis's Strait, from which they issue in magnificent procession directly the current increases in a southerly direction. Polar navigators have been surprised to find these huge monsters moving against the wind, apparently by some inherent force, and crashing through vast fields of ice, as if impatient to escape from the silence and desolation of the Polar seas. The explanation of this singular occurrence is, that powerful under-currents are acting upon the submerged portions, which, in all cases, vastly preponderate over the glittering precipices of crystal that appear above the water-line. As the icebergs advance into the open waters of the Atlantic, they at last come to the edge of the Gulf-stream, where, in "the great bend," about latitude 43°, they harbour in dangerous numbers, and without doubt send many a noble ship headlong to the bottom. In all probability the ill-fated _President_ was thus destroyed, and some towering iceberg, that has long since bowed its glittering peaks to the solvent action of the warm water of the Gulf-stream, was, perhaps, the only witness of the calamity which placed the noble _Pacific_ among the list of ships that have sailed forth into eternity.